JPS5940975Y2 - shearing machine - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a shearing machine that supports a workpiece to be cut.

Conventionally, a general shearing machine as shown in FIG. 1 is used to place a workpiece 3 on a work table 1 and position it appropriately as shown in FIG. Temporary press 5
The structure is such that the workpiece 3 is suppressed and fixed, the upper blade 7 is moved downward in the direction of arrow A, and the workpiece 3 is sheared between it and the lower blade 9.

However, in the above-mentioned work, when inserting the workpiece 3 in the direction of arrow B as shown in FIG. 3 is curved as shown in the figure due to its own weight, and the lower blade 9vC makes strong sliding contact at the arrow C point, causing problems such as damage to the lower surface of the workpiece 3 and premature wear of the cutting edge of the lower blade 9.

In order to insert and position the workpiece 3 to prevent this, the workpiece 3 is lifted manually or using a mechanical device.
It requires a great deal of effort and special machinery to prevent contact with the lower blade 9, and is dangerous if thrown by a highly skilled person.

The present invention was made in view of the above circumstances, and provides a shearing machine that can safely and reliably prevent damage to the workpiece 3 and early wear of the lower blade 9 using a simple device, and improve work efficiency. This is what we are trying to provide.

Next, the structure will be explained with reference to FIG. 4 showing an embodiment of the present invention.
1, an arc-shaped plate spring 13 is fixed at one end to the work table by a bolt 15, and the upper part of the arc part protrudes appropriately from the upper surface of the work table 1, and the workpiece 3 placed on the work table 1 is elastically The workpiece 3 is supported at a slight distance from the upper surface of the work table 1 and the cutting edge C of the lower blade 9.

Therefore, even if the workpiece 3 is inserted and positioned by moving it forward, backward, left, and right in the state shown in FIG.
Since it is spaced apart from the lower blade 9, there is no risk of damage due to sliding contact.

After positioning in this way, when the workpiece 3 is pressed with the temporary presser foot 5, the arcuate leaf spring 13 is bent as shown in FIG. It is fixed and does not have any detrimental effect on the shearing operation.

When the temporary presser foot 5 is moved upward after shearing, the workpiece 3 as shown in FIG. 4 is lifted again, and contact with the lower blade 9 is prevented in the operation for the next process.

In short, the present invention does not inhibit the temporary press 50 function,
And a support that can lift the workpiece 3 appropriately,
It is to be provided near the lower blade 9 of the work table 10.

FIG. 6 shows another embodiment in which one end of a tilting rod 17 is pivotally supported in a recess 11 by a shaft 19 so as to be tiltable relative to the work table 1, and an upward tilting force is applied by a spring 21. A roller 23 is biased and attached to the other end.

This roller supports the workpiece 3 and prevents damage to the lower blade 9.
The function of preventing early wear is the same as in the embodiment shown in FIG. As the rod 17 tilts, the roller 23 moves downward and the workpiece 3 comes into close contact with the work table 1.

FIG. 8 shows another embodiment, in which a shoe 25 is fitted into the recess 11 so as to be slidable vertically and urged upward by a spring 27.

When the temporary presser foot 5 is raised, the shoe 25 is pressed as shown in Fig. 8.
uses a biasing force to lift the workpiece 3 and separate it from the lower blade 9. When the temporary presser foot 5 presses down the workpiece 3, the shoe 25 moves downward as shown in FIG. Place it in close contact with Chiful 1.

As can be understood from the above description of the embodiments, the gist of the present invention is as described in the claims for utility model registration. Since the workpiece 3 is automatically separated from the lower blade 9, there is no fear that it will be damaged by the lower blade 9, and there is no fear that the lower blade 9 will wear out prematurely.

In addition, since there is no problem in fixing the workpiece with the temporary presser foot 5, the operator can cut the workpiece safely, easily, and with high efficiency without requiring special skills. It has a great effect.

It should be noted that the present invention is not limited to the above-described embodiments, but can be implemented in various other embodiments by making appropriate changes.

[Brief explanation of drawings]

1, 2, and 3 are schematic diagrams showing the structure and operation of a shearing machine commonly used in the past; FIG. 4 is an explanatory diagram of the configuration of an embodiment of the present invention; FIG. 5 is an explanatory view of the same operation, and FIGS. 6, 7, 8, and 9 are explanatory views of other embodiments and operations. (Explanation of symbols representing main parts of the drawing) 1...-
・Working table, 3... Work material, 13...
...Arc-shaped leaf spring.

Claims (1)

[Scope of utility model registration request] The work table 1 is equipped with a lower blade 9 that shears the workpiece 3 in cooperation with an upper blade 7 that is movable up and down. A support for supporting the workpiece 3 is provided so as to be movable up and down and freely lowered to at least the same height as the top surface of the work table 1, and the support tool protrudes from the top surface of the work table 1 at least when the workpiece 3 is moved. A shearing machine characterized by being energized.